Yes, two Hot Rods would be unlocked at TH10 - one to place next to each Inferno Tower to stop those pesky Freeze Spells from unfairly subverting defenses. After all, it takes no skill to drop a Freeze Spell.
And 250 Gravity Rods would be unlocked - one to place next to each wall segment. Stupid unfair Jump Spells that require no skill to unfairly bypass defenses. Level 2 Gravity Rods would also stop air troops from passing by, since air troops unfairly subvert walls.
This idea is even better than a Lightning Rod to place next to your DE storage.

