^Hell no.
There is no good reason not to and am about to name reasons why:
1. By being major features is why they are needed. They if researched they are REAL special techs, like having the best sparrows before going to harpoons makes a difference and really defines what specializing means.
2. I suggested more specialized techs or different weapon types or adjustable weapons. Why? Because of choices are fun and give a sense of control in a game were control is a theme. (that being TBS games) imagine the difference between dryly moving down the tree with mediocre choices where you will eventually fall into a pattern of research or immersing in choices of specializing or moving forward. Also it comes in handy when wars come up as it can mitigate having the wrong defenses.
3. If you have to pick ONE and then move on to a Better weapon there is no incentive to use the specialized component anymore. its no different than before with lasers 1 2 3 4 5 6 AND 7. It would be a singular tech that adds a value which can't be interacted with that ends up being hollow.
4. If you could shape combat as a lesser force by having better accuracy, range, and rate of fire THAT would make combat as tactical as...tactical combat.
5. Its just fun researching, building, and destroying as much stuff as possible.
DARCA. 