Thanks for the link but just a level or two is enough, going back to level 1 does seem too much. As mentioned above, it's more to discourage suicide benefits.
If you know of a mod that just knocks off a level or so without destabilising the game let me know.
Games should never be balanced on the whims of single players or people who know not how to play.
This doesn't affect balance. It's a gameplay issue and as such anyone's opinion is valid.
While I'm sure for the top 30 or so skilled players listed on this website, even simply losing it in the first place is enough to tip the balance in their tight games - hey, if you lose such an important battle of course you are now considerably behind. I'm also sure these skilled players are capable of adapting to be slightly more careful with the titan to take into account that some experience will be lost. No-one is affected more than anyone else.
For all us unskilled mp and sp (everyone minus about 30 people), bringing down a titan is a huge moment, especially if it was higher level, and having it appear again a few minutes later, now with more experience, takes the achievement away. And when you get players obviously just sending the titan out for training it's annoying to now be forced to oblige.