Warning: This may get a bit long but I feel like I have to get some of this stuff off my chest. This is all personal opinion and I am not looking for placation or vindication.
Battletech is the first PC game I've bought in years, and I've enjoyed it immensely since I purchased it back in June. I had some problems with whatever bugs, gameplay quirks, UI deficiencies, memory leaks, etc., that I encountered but none of them were serious enough to dampen my enjoyment too much. I was starting to lose interest a bit after playing through the campaign & post-campaign sandbox for the 2nd time, but the announcement of the first DLC and 1.3 update made me cautiously optimistic about being able to really enjoy the game again. I had a hard time deciding whether to pre-order the DLC(s) but eventually decided to wait until after the first one was released to see if it was worth my money.
I feel somewhat justified in my decision to not pre-order Flashpoint, since I was really hoping for more improvements to the sandbox experience instead of a series of one-time missions. From some of the feedback on this forum, it seems like some of those missions were very poorly thought out. I may purchase DLCs in the future, but what has really ruined my positive opinion of Battletech was the 1.3 update and how it affected my game.
1) The reputation system & alliances: Seemed like a promising idea. Continued my post-campaign sandbox game and took a few missions against the local pirates since I didn't really want to upset my reputation with any other factions yet. Took one too many contracts against the pirates, now my reputation with them is seemingly beyond repair. I spent several game months looking for 2.5 skull pirate missions to restore reputation, sometimes not taking any contracts at all (so as not to disturb my reputation with other factions), eventually reducing my cash reserves from 25M to 13M before deciding to give up. Alliances and faction-specific store access also seemed promising, but judging from feedback on this forum it seems like there is very little incentive and many drawbacks to allying yourself to a faction. Trying to balance reputation so that contract availability doesn't dry up is not fun. Trying to balance reputation to avoid permanently losing the ability to switch to a different faction is not fun.
2) Bugs: One of which was the straw on the camel's back. My most current save game contains the mech deletion bug, in which a ready-to-go mech in the bay is somehow completely deleted along with all of its gear, apparently by something related to bringing a mech out of storage. Nothing I can do prevents this mech from being deleted. Losing several hours of gameplay in order to load a saved game where this bug does not exist is not the solution I am looking for. I would rather not play the game and wait until the bug is fixed.
All in all, I still really like this game but in its current state I have almost zero desire to play. It seems like aspects of both Flashpoint and the 1.3 update were pushed out too early and/or poorly thought out. I would rather have had a delayed release than an update or DLC which causes me to not want to play the game anymore. I am hoping for serious steps in the right direction soon.